Fuse-bearing sleeve which is inserted between the male and female members of a multiple-line connector contains a safety fuse for each pin of the connector assembly. The sleeve is easily and quickly opened for fuse replacement

Weber, G. J.

English

NASA Technical Reports Server

Leai Is Out 
February 1966	 Brief 66-10050 
NASA TECH BRIEF	 G 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Single Connector Provides Safety Fuses for Multiple Lines 
CONNECTOR ASSEMBLY 
Pin 
Receptacle
Fuse Element
SAFETY FUSE ASSEMBLY 
The problem: 
To design a single, compact device that will pro-
vide safety fuses for a number of circuits in a variety 
of current carrying capacities. It must protect the 
safety fuses and connections from the elements and 
be easily and quickly opened for exchange or replace-
ment of fuses. 
The solution: 
A fuse-bearing sleeve for insertion between the 
male and female members of a multiple-line con-
nector. The sleeve, which contains an individual safety
fuse for each pin of the connector assembly, may be 
quickly opened for fuse replacement. 
How it's done: 
The connector may be mounted in a cabinet or 
building wall and held in place by two locknuts. A 
male plug has all incoming leads soldered to pins in 
its base. A female plug has all outgoing leads sol-
dered to pin receptacles in its base and it includes the 
means of fastening to a wall section. A threaded 
fuse sleeve contains the required number of safety 
fuse assemblies (one illustrated) and includes a captive 
(continued overleaf) 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
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threaded coupling. The fuse sleeve is pressed into the 
female plug so all its fuse assembly pins enter the 
mating receptacles and is secured by tightening the 
coupling onto the threads of the female plug. The male 
plug is then pressed into the fuse sleeve so that its 
pins enter the pin receptacles of the various fuse as-
semblies and it is secured by tightening the coupling 
onto the threads of the fuse sleeve. 
To replace or exchange fuses, the male plug is dis-
connected from the fuse sleeve and the fuse sleeve is 
removed from the wall-anchored female plug. Using 
a special tool (not shown), any fuse assembly may be 
quickly removed by pressing the tool against the 
shoulder of the pin and forcing the fuse assembly 
back out of its channel within the fuse sleeve. The re-
placement fuse assembly is installed by forcing it 
pin-first into its channel within the fuse sleeve. The
fuse assembly is easily disassembled by pulling on 
each end of the fuse capsule and a new fuse element 
or one of a different value is quickly installed in the 
fuse. 
Note:
 
This invention should have application wherever 
multiple leads carrying various current loads must be 
fused.	 .	 . 
Patent status:	 . .	 .	 . 
Title to this invention has been waived under the 
provisions of the National Aeronautics and Space 
Act (42 U .S.C. 2457 (f)), to McDonnell Aircraft Corpo-
ration, Box 516, St. Louis, Missouri, 63166. 
Source: George J. Weber of McDonnell

Aircraft Corporation under contract

to Manned Spacecraft Center

(MSC. 199)
. 
Brief 66-10050	 Category 01


Single connector provides safety fuses for multiple lines

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